swirl.rb.html

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  <title>RMagick example: swirl.rb</title>
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<h1>swirl.rb</h1>
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<pre class="language-ruby">
# frozen_string_literal: true

require 'rmagick'

# Demonstrate the Image#swirl method

img = Magick::Image.read('images/Flower_Hat.jpg').first

# Make an animated image.
animation = Magick::ImageList.new
animation &lt;&lt; img.copy
30.step(360, 45) { |degrees| animation &lt;&lt; img.swirl(degrees) }

animation.delay = 20
animation.iterations = 10_000

animation.write('swirl.gif')
exit
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